body{
    padding-top: 70px;
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    padding: 0;
}

.top{
    display: flex;
    align-items: center;
    background-color: #f8f9fa;
    padding: 10px 20px;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}
.top img{
    height: 50px;
    margin-right: 20px;
}
.Topnavbar{
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
}
.Topnavbar li{
    margin: 0 20px;
}
.Topnavbar a{
    font-size: 20px;
    text-decoration: none;
    color: #333;
    padding: 5px 10px;
    border-radius: 5px;
    transition: background-color 0.5s ease;
}
.Topnavbar a:hover{
    background-color: #e0e0e0;
}

.message{
    font-size: 48px;
    font-weight: bold;
    color: #333;
    font-family: 黑体;
    display: felx;
    align-items: center;
    justify-content: left;
    margin-top: 100px;
    margin-left: 200px;
}

.main{
    display: flex;
    align-items: center ;
    padding: 20px;
    margin: 20px auto 0 auto;
    background-color: #fff;
    width: 80%;
    max-width: 1200px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
}

#left{
    flex: 4;
    margin-left: 50px;
}

#title{
    width: 150px;
    height: auto;
    margin: 30px 0;
}

#area{
    width: 250px;
    height: 100px;
    margin-top: 30px;
}

#A1{
    margin:30px 30px 30px 200px ;
}

.right{
    flex: 5;
    text-align: center;
    margin-right: 20px;
    flex-direction: column;
}

.right img{
    width: 500px;
    margin-bottom: 10px;
    height: auto;
}

.under{
    margin: 0;
    background-color: #000;
    color: #fff;
}
.Bottonnavbar {
    display: flex;
    justify-content: center;
    padding: 20px 150px;
    border-bottom: 1px solid #444;
    gap: 20px;
}
.section {
    padding: 0 20px;
    display: flex;
    gap: 10px;
    flex-direction: column;
}
.section a {
    text-decoration: none;
    margin: 0 10px;
    padding: 5px 10px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}
.section a:hover {
    background-color: #444;
}
.first-row{ 
    font-weight: bold;
    color: #fff;
    font-size: 18px;
}
.rows{
    color: #aaa;
    font-size: 0.9em;
}
.footer {
    display: flex;
    justify-content: center;
    padding: 10px;
    background-color: #111;
    color: #aaa;
    font-size: 0.8em;
}
.footer a {
    color: #aaa;
    text-decoration: none;
    margin: 0 20px;
 }
.logo {
    display: flex;
    align-items: left;
}
.logo img {
    height: 100px;
    margin-right: 10px;
 }
.end{
    display: flex;
    justify-content: center;
    margin-top: 10px;
}
.copyright{
    margin: 0;
    color: #bbb;
    font-size: 0.7em;
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

@media screen and  (max-width: 768px) {
    .top{
        padding: 5px;
    }

    .top img{
        height: 40px;
        margin-right: 10px;
    }

    .Topnavbar{
        width: 100%;
    }

    .Topnavbar li{
        margin: 0 5px;
    }

    .Topnavbar a{
        font-size: 10px;
        border-radius: 2px;
        padding: 0 5px;
    }

    .message{
        font-size: 24px;
        margin-top: 60px;
        margin-left: 40px;
    }
    .myform{
        font-size: 10px;
    }

    #left{
        margin-left: 10px;
    }
    
    #title{
        width: 50px;
        height: auto;
        margin: 10px 0;
        font-size: 8px;
    }
    #area{
        width: 120px;
        height: 40px;
        margin-top: 10px;
    }
    #A1{
        font-size: 10px;
        margin:10px 10px 10px 40px ;
    }
    #A2{
        font-size: 10px;
    }
    .right{
        margin-right: 10px;
    }
    
    .right img{
        width: 200px;
        margin-bottom: 20px;
        height: auto;
    }

    .Bottonnavbar {
        padding: 10px;
        justify-content: center;
        gap: 10px;
    }

    .section {
        padding: 5px;
        gap: 5px;
        width: 100%;
    }

    .section a{
        margin: 0;
        padding: 0;
        border-radius: 1px;
    }

    .first-row{
        font-weight: 500;
        font-size: 10px;
    }

    .rows{
        font-size: 8px;
    }

    .footer {
        flex-direction: row;
        font-size: 9px;
    }

    .footer a{
        color: #fff;
        font-weight: 500;
        margin: 0 10px;
    }

    .logo img {
        height: 50px;
    }

    .copyright {
        color: #fff;
        font-size: 8px;
        margin-bottom: 10px;
    }


}